<span>18 mph.
OK. Let's call the speed of the slower cyclist X, And since the faster cyclist is 3 times faster, that speed will be 3X. So their combine closing speed will be (X + 3X) and over a period of 4 hours, they travel 96 miles. So the equation becomes:
4(X + 3X) = 96
Now solve for X
4(X + 3X) = 96
4(4X) = 96
16X = 96
X = 6
So the slower cyclist has a speed of 6 mph. And since the faster cyclist is 3 times faster, that speed is 3*6 = 18 mph.</span>
Answer:
35
/72
Step-by-step explanation:
5
/8 × 7
/9 is 35
/72
all you have to do is multiply
5×7 and 8×9
X ÷ 3 = 10
what you want to do is isolate for x by multiplying both sides by 3
10 × 3 = 30
So x = 30
You can evaluate all numbers and in the prosses, make any problem easier.
Answer:
x^2 +4x = 18
Step-by-step explanation:
The variable y is isolated in the first equation by dividing both sides by the coefficient of y:
3y = 12x . . . . . . given
3y/3 = 12x/3 . . . . . divide by the coefficient of y
y = 4x . . . . . . . simplify
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This expression (4x) is put in place of y when substitution is used.
x^2 +y = 18 . . . . given
x^2 +4x = 18 . . . . . with 4x substituted for y
